We are using RadAsyncUpload in a couple of places in our system. We've set the TemporaryFileExpiration property for each control, for some of them it is set on 20 minutes, for others it is set on 4 hours. However our RadAsyncUpload temporary folder doesn't get automatically cleaned up no matter of the TemporaryFileExpiration setting. We are using version 2017.2.503.35 of Telerik.Web.UI.dll. Any help with this will be much appreciated!